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(No Model.)

G. E. HART.

MANUFACTURE OF COMBINED PINIONS AND RATGHETS. No. 338,961. Patented Mar.30, 1886.

N. PFIERS: Photo-lithograph. Wzsmngnlk v.1;

UNITED STATES PATENT OFFICE.

GEORGE E. HART, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE WVATERBURYVVATOH COMPANY, OF SAME PLACE.

MANUFACTURE OF COMBINED PINION AND RATCHET.

SPECIFICATION forming part of Letters Patent No. 338,961, dated March30, 1886.

Application filed July 80, 1885.

To all whom it may concern.-

Be it known that I, GEORGE E. HART, of Vaterbury, in the county of NewHaven, and in the State of Connecticut, have invented certain new anduseful Improvements in the Manufacture of Combined Vinding Pinion andRatchet; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, in which Figure 1 is a perspective view of the blank used formy winding pinion or wheel. Fig. 2 is a like view of the same aftercompletion. Figs. 3 and 4. are respectively perspective views of theratchet and hub-blank and of the completed ratchet and hub. Fig. 5 is alike view from the outer or front side of saidpinion and ratchetcombined, and Fig. 6 is a central section of the same upon an axialline.

Letters of like name and kind indicate similar parts in each of thefigures.

My invention has for its object the ready production of a wheel orpinion having ratchet or other teeth sunk below the plane of its face,to which end said invention consists in the method employed,substantially as and for the purpose hereinafter specified.

In carrying my invention into practice a disk of metal, A, having asuitable diameter and thickness, is provided with a central opening, a,that equals or is slightly larger in diameter than the ratchet, and hascut on it periphery gear-teeth a, of usual form and number. A second(considerably thicker) disk, B, is placed between suitable dies, andsubjected to pressure until its faces are caused to conform thereto, andits front face is provided with a concentric row of ratchet-teeth, b,and its rear face has the hub shape shown in Figs. 4 and 6. By the same,or by any usual means, the periphery of said ratchetseetion is providedwith a rabbet, b, which Serial No. 173,054.

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corresponds in diameter and depth to the diameter of the opening a andthe thickness of the wheel or pinion section A, and enables saidratchet-section to be inserted within said opening, when said parts willpresent the appearance shown in Flgs. 5 and 6, said ratchetteeth beingflush with or slightly below the front face of said pinion-section. Ifdesired, said section B may be given its form by any other means thandies. An axial opening, 12 is now, or, if desired, at any previousstage, provided within the ratchet-section B, after which the parts thusconstructed are permanently secn red together by any usual meanssuch asa close-pressed fit, dowel-pins, screws, solder, &c.when the combinedpinion and ratchet presents precisely the same appearance,and is for allpractical purposes the same as though made from one piece, while morereadily constructed and more perfect in construction than would bepracticable by means heretofore employed.

Having thus fully set forth the nature and merits of my invention, whatI claim is The hereinbefore-described method of constructing a windingpinion and ratchet,which consists in forming a plain, peripherallytoothed ring by any usual means, in forming by means of dies a hub withratchet-teeth within and a rabbet around one end, and finally combiningsaid parts by fitting said inion over or upon and securing it to therabbeted end of said hub. substantially as and for the purposespecified.

In testimony that I claim the foregoing I have hereunto set my hand this18th day of July, 1885.

GEORGE E. HART.

